a few questions

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southernboys

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working on a huricane damaged condo that appears to have been built in 84. i was wondering when the sa gfi circuts were adopted into code also the bathroom receps being dedicated to just the bathroom? when were gfi devices in general adopted? and last but not least how can I have 208 on a 120 single phase panel 208 of course being from hot to hot. I understand it with 3 phase but thought single could only be 120/240. with it being a 208 voltage can I have a 250 device hooked to it? as always thanks for the help
 
Re: a few questions

It's not uncommon at condo's or appartments to have a 3phase service with single phase metering, therefore 120/208vac

frank
 
Re: a few questions

1987 was the first year for kitchen GFCIs, for receptacles within 6 feet of the sink.
1975 for bathroom GFCIs.

[ April 25, 2005, 09:40 PM: Message edited by: russ ]
 
Re: a few questions

Most 240 volt apliances will run on 208. Check the nameplate. But if they have heater elements as in dryer, stoves or baseboard heaters, drying and cooking times will have to increased and baseboard heaters are not as warm.
 
Re: a few questions

trying to understand this better. I didnt check at the meter bank but there is not a transformer that I am aware of between the meter and the panel in the unit. so where does the 3 phase step down to single phase I could see it if I had a elec room but there is nothing between the meter and the unit
 
Re: a few questions

You don't need a transformer, you just use 2? of the 3? available. The meter center will have a full 3? bus and you pick up two of the phases for each apartment or condo. The two phases are 120? apart instead of 180?. The meter centers are set up to rotate your feeds to different phases so the load on the 3? remains balanced. :D
 
Re: a few questions

Just like putting in a double pole breaker in a 3 phase panel to feed maybe a single phase automotive lift motor. Just taling 2 of the 3 phases.
 
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